﻿// Spun AJAX Framework
// Copyright (C) 2008 Blake Hegerle
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

using System;
using System.Collections.Generic;
using System.Linq;

namespace Spun.Models.Sequences
{
    public static class QuerySequenceExt
    {
        public static Sequence<T> ToSequence<T>(this IEnumerable<T> Source)
        {
            return new QuerySequence<T>(Source);
        }
    }

    public class QuerySequence<T> : Sequence<T>
    {
        public QuerySequence(IEnumerable<T> Enumerable)
            :base(typeof(QuerySequence<T>), false, false)
        {
            List = Enumerable.ToList();
        }

        public override uint Count
        {
            get
            {
                return (uint)List.Count();
            }
            set
            {
                throw new NotImplementedException();
            }
        }

        public override T this[uint Index]
        {
            get
            {
                return List[(int)Index];
            }
            set
            {
                List[(int)Index] = value;
            }
        }

        public override IEnumerator<T> GetEnumerator()
        {
            return List.GetEnumerator();
        }

        private List<T> List;
    }
}
